1 files changed, 96 insertions, 0 deletions
diff --git a/src/states/world_builder_state.h b/src/states/world_builder_state.h
new file mode 100644
index 0000000..8b4678a
--- /dev/null
+++ b/src/states/world_builder_state.h
@@ -0,0 +1,96 @@
+#pragma once
+
+#include "core/camera.h"
+#include "core/state.h"
+#include "core/event.h"
+#include "core/log.h"
+
+#include "engine/scene.h"
+#include "engine/object.h"
+
+#include "rendering/renderer.h"
+#include "rendering/shader.h"
+#include "rendering/vertex_array.h"
+
+#include <imgui.h>
+#include <ImGuizmo.h>
+
+#include <vector>
+#include <memory>
+
+namespace Donut
+{
+    class WorldBuilderState
+        : public State
+    {
+    public:
+        ~WorldBuilderState() = default;
+        
+        auto on_enter() -> void override;
+        auto on_exit() -> void override;
+        auto on_update(float delta_time) -> void override;
+        auto on_render() -> void override;
+        auto on_im_ui_render() -> void override;
+        auto on_event(Event& event) -> void override;
+    private:
+        auto add_sphere() -> void;
+        auto remove_selected_object() -> void;
+        auto clear_scene() -> void;
+        auto save_scene() -> void;
+        auto load_scene() -> void;
+        auto render_scene() -> void;
+        auto initialize_sphere_geometry() -> void;
+        auto initialize_grid_geometry() -> void;
+        auto render_grid() -> void;
+    private:
+        Scene  m_scene;
+        Camera m_camera;
+        bool   m_initialized = false;
+        
+        Ref<Shader>      m_sphere_shader;
+        Ref<VertexArray> m_sphere_vao;
+        Ref<CubemapTexture> m_hdri_environment;
+        
+        Ref<Shader>      m_skybox_shader;
+        Ref<VertexArray> m_skybox_vao;
+        
+        Ref<Shader>      m_grid_shader;
+        Ref<VertexArray> m_grid_vao;
+        
+        glm::vec3 m_new_object_position = glm::vec3(0.0f, 0.0f, 0.0f);
+        float     m_new_object_radius   = 1.0f;
+        glm::vec3 m_new_object_color    = glm::vec3(1.0f, 1.0f, 1.0f);
+        float     m_new_object_specular = 0.5f;
+        float     m_new_object_emission = 0.0f;
+        
+        int       m_selected_object_index = -1;
+        bool      m_camera_dragging      = false;
+        glm::vec2 m_last_mouse_pos        = glm::vec2(0.0f, 0.0f);
+        
+        ImGuizmo::OPERATION m_gizmo_operation = ImGuizmo::TRANSLATE;
+        ImGuizmo::MODE      m_gizmo_mode      = ImGuizmo::LOCAL;
+        
+        bool m_show_object_list      = true;
+        bool m_show_object_creator   = true;
+        bool m_show_scene_info       = true;
+        bool m_show_gizmo_controls   = true;
+        bool m_show_outline_controls = true;
+        bool m_show_grid            = true;
+
+        glm::vec3 m_outline_color = glm::vec3(1.0f, 1.0f, 1.0f);
+        float     m_outline_width = 0.25f;
+        
+        glm::vec3 m_grid_color = glm::vec3(0.5f, 0.5f, 0.5f);
+        float     m_grid_alpha = 0.5f;
+        float     m_grid_size  = 50.0f;
+        
+        Object m_black_hole;
+        bool   m_black_hole_initialized = false;
+        
+        auto set_hdri_environment(Ref<CubemapTexture> hdri) -> void { m_hdri_environment = hdri; }
+        auto get_hdri_environment() const -> Ref<CubemapTexture> { return m_hdri_environment; }
+        
+        auto initialize_skybox_geometry() -> void;
+        auto render_skybox() -> void;
+    };
+};